My display goes blank, rather than displaying "di R".Preparations for DTC readout:
Temperature selector left "HI", right "LO".
Within 20 seconds, press REST and EC simultaneously for more than 5 seconds
The led in the RECIRCULATE button flashes and the display shows "di R"
What I find odd is that I have two codes in memory,Press AUTO repeatedly until all DTC's (refer to DTC table) are displayed. Record each DTC as it is displayed . . . By pressing the right AUTO button, the next DTC stored in memory will be displayed.
Please put the year and the model of your car, and your location.I have codes of 43 8 / 42 232/41 3 / 40 6/ 24 11.9 / 23 50/ 22 50/ 21 25/ 20 3.3 what are thesecoeds
Yes, thanks for updating the post with sensor readings. The engine running and a/c on refrigerant pressure figure of 15 Bars makes more sense. Also provide readings with the engine off and cool sensor readings as you did before.yes, with engine idling.
My AC either goes off with the EC LED illuminated or when I have reset the error codes, it starts to work somewhat, but its never very efficient.
Yeah, I remember. I am an engineer too It is hard to diagnose an intermittent issue, especially from remote.I did post the problem before on a different thread. When the EC led stays on and it does not cool i get the error codes. When I clear the codes, the AC starts working, although not very well.
I am trying to figure out the cause of the system going into the EC mode by itself and not allowing me to turn it off. Does the system detect something that causes the AC controller to turn off the compressor? However, it cannot be permanent since I can reset it by clearing the codes.
Anyway, I am looking for possible causes.
If the problem was permanent,, perhaps it would be easier to diagnose.
I will post the values with the engine cold tomorrow morning.
I really do appreciate the help; and I am an engineer trying to understand the fundamental cause by leveraging the experience of fellow E320 owners -- bear with me.